Add OOP/Java/Assignments/FISAC/Q7.java

OOP/Java/Assignments/FISAC/Q7.java

@@ -0,0 +1,26 @@
+class Task {
+    void executeTask() {
+        System.out.println("Task is being executed");
+    }
+}
+
+class NonNumericTypeException extends Exception {
+    NonNumericTypeException(String msg) {
+        super(msg);
+    }
+}
+
+class SumTask<T extends Number> extends Task {
+    synchronized T sum(T a, T b) throws NonNumericTypeException {
+        if (a == null || b == null) throw new NonNumericTypeException("Non-numeric type");
+        return (T) Double.valueOf(a.doubleValue() + b.doubleValue());
+    }
+}
+
+public class Main {
+    public static void main(String[] args) throws NonNumericTypeException {
+        SumTask<Double> task = new SumTask<>();
+        task.executeTask();
+        System.out.println(task.sum(3.0, 4.0));
+    }
+}